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    <title>基础</title>
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    <h2 style="background-color:red">This is a heading</h2>
    <p style="background-color:green">This is a paragraph.</p>F
    <p>这是一个段落。</p>
    <p>这是另外一个段落。</p>
    <!-- HTML 链接是通过标签 <a> 来定义的. -->
    <a href="http://www.baidu.com">不要瞎点</a>
    <p>This is a paragraph</p>
    <p>This is another paragraph</p>
    <s>nide</s><br>
    <strike>nide</strike>
    <u>nide</u>
    <h1 style="font-family:verdana">A heading</h1>
    <p style="font-family:arial;color:red;font-size:20px;">A paragraph.</p>
    <h1 style="text-align:center">This is a heading</h1>
    <p>The heading above is aligned to the center of this page.</p>
    <p>WWF 的目标是：<q>构建人与自然和谐共存的世界。</q></p>
    <p><abbr title="World Health Organization">WHO</abbr> 成立于 1948 年。</p>
    <p><dfn title="World Health Organization">WHO</dfn> 成立于 1948 年。</p>
    <p><dfn><abbr title="World Health Organization">WHO</abbr></dfn> 成立于 1948 年。</p>
    <address>
        Written by Donald Duck.<br>
        Visit us at:<br>
        Example.com<br>
        Box 564, Disneyland<br>
        USA
    </address>

    <p><cite>The Scream</cite> by Edward Munch. Painted in 1893.</p>
    <p>To open a file, select:</p>

    <p><kbd>File | Open...</kbd></p>
    <p>Einstein wrote:</p>

    <p><var>E = m c<sup>2</sup></var></p>
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